Improvement in steam vacuum-pumps



t i To all zcLomJ/t may concern: i i l Beit known that we, J AMEs H. PAT'IEE andi y JAMES II. I'fArrEEANnHGrI J. GRAHAM', orfMoNMoUTII, ILLINOIS.

' lllvdlh'RoVI-:yMEN-TJIN sfr-EAM VACUUM-PUMPS.

Specificationforming part of Letters Patent N0. 110,933,` dated January 10, 1871.v

HUGH J GRAHAM, of Monmouth, in` the county of Vyarren and State of Illinois, have' Y mvented certainImprovements in Steam Vacuyiim-lhimp Powers, of which the following is a specification n, jlhe rstpart of our invention relates to the .combination and4 arrangement of an overshot,`

water-wheel with, a` steam -vacnum-piunp, an

intermediate tank being placed between they two for the purpose of insuring a steady supply lof water to the wheel.

y rIhe second part of ourinvention relates to the arrangement of valves and valve-gearing, whereby the operation of the whole device is rendered automatic. f

The third part of ourinvention relates to the arrangement of the condenser for admit ting a spray of water to aid in condensing the steam.

In the accompanying drawing, Figure l is a perspective view of our invention. Fig. 2 is a vertical cross-section of the tank A, Fig. l.

Fig. 3 is a vertical cross-section, showing the interior of the tank A, the inlet-valve for water, and its connection with other parts of the device.

A is the pump-tank. B is the lower water reservoir or tank. C is an intermediate reservoir or tank. D is an ordinary overshot water-wheel. E E is the frame-work for supporting the tanks and other parts of the device. F is a cam on the end of the wheel (D) shaft. G is a lever pivoted to frame-piece E at e. His a pitman-rod. I is a lever pivoted to the condensingwater vessel J, and connected at one end, by pivot, with the pitman II, and at the other end with the upper end of valve-stem K. L is a pipe connecting the condense-water vessel J and the tank A, extending through the tank A, and forming, at

the far end, the inlet-steam pipe, and is perforated along its upper side in the tank A, to throw the steam against the top of the tank and spread it. M is a wooden bar, with a semicircular longitudinal groove in its upper side, into which the pipe L is seated, the bar M being bolted to the inner side of the tank A, as shown at Fig. 2, a little distance from the tank-head, in order to leave room for the passage of the entering steam and condensing water, and to act as a deflector in spreading the steam. N is the water-inlet pipe'. O `is a' pipe-communicating atits lower end with the 'interior of the inlet-pipe N, and having a funnel-shaped mouth at its lower end, provided with a check-valve, n, opening upward.. The

upper end of this lpipe 0- is within the condense-water vessel AJ. 'P is a clack-va'lve on the upperend of the' inlet-pipe 2N, and has a handle, p, extending back-from its pivoted point, to which the'valve-stem K is attached at 'its lower end. Q is a clack-'valve lat the bottom 'of tank A, opening outwardly. R is a crank onthe shaft of wheel D, and is connected, by a pitman-rod, r, and crank Si, with -the key .to the two-way cock s in the steaminlet. pipe L. 'I vis aAcheck-valve in thel pipe L, opening-from the condense-water vessel;J. The end of the pitman-rod r is `slotted where it receives the stud on the end of the crank R.

The upper end ofthe valve-stem K is also slotted where it receives the stud on the end of the lever I. U is a two-way cock in the pipe L, the key of which is operated by a crank, u, pivoted to the pitman-rod H.

The operation of our invention is as follows:

The revolution of wheel D'having brought the crank R into the position shown by Fig. 1, the two-way cock s will be opened by the pitman r and crank S, and the steam from any suitayble generator will enter the tank A through the pipe L, the slot in the lower end of the pitman r allowing the motion of the pitman to cease for a short time, following the movement of the wheel D, while the tank A fills sufficiently with steam. The water in the tank A discharges through valve Q while the tank is filling with steam. rIhe continued revolution of wheel D, bringing the crank R directly opposite the position last described, will close the two-way cock s, and prevent the further admission of steam, at the same time bringing the high part j' of the cam F upward. It thereby raises the end of the lever G, which in turn, through pitman II and crank u, opens the two-way cock U, and allows the condensing water to flo'w from the tank J, through pipe L, into the tank A, for the purpose of condensing the steam and forming the necessary vacuum. The rod H at the same time moves the end of lever I up in the slotted end of stem K, without disturbing the position of the movement of stem K.

When the vacuum is formed, the Water rushing in through p'ipe N will open the valve P, thereby bringing down the stem K, and with it the lever I, and thereby closing the two-Way cock U, and preventing the further admission of condensing Water; but this does not take place until the Wheel D has revolved far enough to carry the cam f past the end of the lever G, thus leaving it free to be depressed.

Now, While 'the tank A is lling with Water, the revolution of the Wheel D Will again bring the crank R into the first position described,

opening the two-Way cock s, admitting steam, and repeating the same operation. Thus large, to hold a supply ahead, which may be fed as desired to the Wheel D through the Water-gate V, thus insuring a regular and steady 110W on the Wheel D, Which could not be the case if the Water flowed directly onto it from the tank A.

By this machine a considerable quantity of Water may be elevated, but a small portion of Which is required to'operate the mechanism, the greater portion of it being available .for any desired purposes.

What we claim as our invention is- 1. The combination of a steam vacuumpump with a Water-Wheel arranged to operate substantially in the manner and for the purpose set forth. I

2, The combination and arrangement of pipe L with valves s, U, and P,-constructed and operated substantially as for the purpose specied.

3. The arrangement ofthe valve P, stem K, I

lever l, and condense-pipe L, in the manner substantially as described, and for the purpose specified.A

4. The cam F, lever G, pitman H, and two- Way cock U, when arranged to operate substantially as described, and for the purpose specified.

5. The combination of the condense-Water vessel J, pipe O, vpipe N, tank A, and pipe L, substantially as described, and for the purpose speciied.

JAMES H. PATTEE. HUGH-J. GRAHAM.

Witnesses:

P. R. RICHARDS, SAMUEL KERR. 

